Table 1.

Basic demographic and clinical characteristics of the study sample

	The whole sample (N = 835)		ECT group (N = 411)		Non-ECT group (N = 424)		Statistics
	N	%	N	%	N	%	X	DF	P
Male	439	52.6	246	59.9	193	45.5	17.2	1	< 0.001
High risk for aggression	246	29.5	174	42.3	72	17	64.6	1	< 0.001
High risk for suicide	77	21.2	124	30.2	53	12.5	39.0	1	< 0.001
Family history	98	11.7	60	14.6	38	9	6.4	1	0.011
SGAs	812	97.3	403	98.1	409	96.5	2.0	1	0.160
FGAs	56	6.7	26	6.3	30	7.1	0.2	1	0.665
Antidepressants	187	22.4	115	28.0	72	17.0	14.5	1	< 0.001
Benzodiazepines	496	59.4	268	65.2	228	53.8	11.3	1	0.001
Mood stabilizers	126	15.1	59	14.4	67	11.1	0.3	1	0.559

	Mean	SD	Mean	SD	Mean	SD	Z
Age (year)	15.5	1.44	15.9	1.31	15.2	1.48	9.2		0.003
Hospitalizations (n)	1.86	1.12	1.88	1.15	1.83	1.01	0.15		0.696
Length of hospitalization (days)	36.7	15.47	36.4	15.27	37.0	15.67	0.24		0.628